Vigorous exercise causes tiny tears in muscle fibers, leading to an immune reaction — inflammation — as the body gets to work repairing the injured cells. So the researchers screened the tissue from the massaged and unmassaged legs to compare their repair processes and find out what difference massage would make.
A strained adductor muscle or tendon can be a tenacious, enduring injury, causing a persistent pain in the inner thigh. If a person feels pain high up near the groin, he or she has injured the tendon of one of the four primary adductor muscles: the gracilis, adductor longus, adductor brevis, or adductor Magnus. If the pain is toward the mid-thigh, the muscle fibers are injured. Pain in both places indicates damage to both tendon and muscle fibers.
Pain that occurs in the calf muscle on the lower part of the leg often is the result of a pulled or torn calf muscle.
A torn calf muscle is similar to an Achilles tendon tear or rupture but occurs higher up in the back of the leg. A sign of a torn calf muscle is similar to that of an Achilles tendon rupture. You may think you’ve just been hit in the leg and potentially hear a “pop.” There is sudden pain in the back of the calf. Then you’ll experience pain, swelling, or bruising in the calf muscle, and you’ll have difficulty walking properly or standing on your toes.
Hamstring injuries are a common problem that affects a large number of athletes. These injuries can be slow to heal with a very high rate of recurrence or re-injury. Hamstring injuries are often associated with sports that require fast acceleration and deceleration such as running (intervals), football, soccer, handball and rugby.